.content1{
    margin: 20px 0;
    .span{
        line-height: 28px;
    }
    .span-group{
        line-height: 28px;
        margin-left: 10px;
        span{
            padding: 6px 16px;
            border: 1px solid #ccc;
            border-radius: 4px;
        }
    }
}

.active{
    background-color: #e6e6e6;
}